Days of Sunshine Per Year in Arizona

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Number of Sunny Days

In the table below, the average number of Sunny Days for a city in Arizona is the total days in a year when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours. Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime.

Total Days With Sun is a sum of the Sunny plus Partly Sunny days. The rest of the days are mainly overcast, with at least 80% cloud cover. All the numbers are annual averages, made from years of weather watching.

Annual days of sunshine
City Sunny
Days
Partly Sunny
Days
Total Days
With Sun
Flagstaff 162 102 264
Phoenix 211   85 296
Tucson 193   91 284
Winslow 177   99 276
Yuma 242   71 313

Amount of Sun

Here's another way to look at how much sunshine a city gets. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Again, these amounts are yearly averages based on many years of weather observations.

Percent sunshine yearly
City % Sun
Flagstaff 78
Phoenix 85
Tucson 85
Yuma 90
Reference

National Climatic Data Center. Comparative Climatic Data.

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